[Gluster-users] Migrate bricks from ext4 to xfs

[Christian Wittwer]

Hi all,
We currently have a blocking issue with ext4 (
https://bugzilla.redhat.com/show_bug.cgi?id=865812). Our plan is now to
migrate the bricks away from ext4 to xfs.

root at prd-os-compute2:~# gluster volume info all

Volume Name: vol0
Type: Distributed-Replicate
Volume ID: 211c824d-b71f-4ce2-b56a-98d0ef68cd1a
Status: Started
Number of Bricks: 2 x 2 = 4
Transport-type: tcp
Bricks:
Brick1: prd-os-compute1:/data/brick0
Brick2: prd-os-compute2:/data/brick0
Brick3: prd-os-compute3:/data/brick0
Brick4: prd-os-compute4:/data/brick0
Options Reconfigured:
performance.cache-size: 256MB

The easiest way would be to stop gluster on a brick, format it with xfs and
start gluster. But I'm not sure if that will work and how long it would
take. We have about 1 TB data on each brick (vm files).

What would you suggest? Did you made any similar migrations?

Cheers,
Christian
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